Since the late 1800s and perhaps before the history of Rosicrucianism has been one of continuous reinvention. Recently the largest Rosicrucian group split. These guys seem to be all over the place although they are demonstrably less visible than they were when I was a kid when the largest public Rosicrucian group (AMORC) had ads in the backs of almost every well read magazine at the time advertising "Mastery of life" or the keys to "Cosmic Consciousness" or "Christ Consciousness".
Asking for a quick list of the major Rosicrucian groups yields:
l in light of history and published Rosicrucian documentation). Toward the end of the book Frater Archer begins a sort of reconstruction of Rosicrucian Magic.
Very good list, there are a few others and it's worth noting that AMORC lost a lot of credibility over the past 5 years or so and has declined quickly ( It's unfortunate when looking for Rosicrucian jewelry much of it is made specifically by the AMORC group and they overprice it.
Also I could be wrong but from what I recall the OKRC is also a mason group. There is a really knowledgably guy (his name slips my mind atm, It'll randomly come to me later) That has a few degree's is a member of the OKRC and I believe he mentioned that the OKRC is one of the Rosicrucian masonic branches.
There are other Rosicrucian groups out there that are reputable, not well known, not Mason related but you have to apply and can be very hard to get into, Those that don't have and application process and even some that do ask for money (really cheap it's more of a donation as they tend to be extremely affordable especially with what you get. which can range from news letters, lesson plans and zoom meetings just to name a few things many offer for pretty much the price of a Netflix membership)
So To answer OP's original question..
@Horapollon There are many Rosicrucian groups and they all draw upon the required main texts you must read.
Fama Fraternitatis (1614),
Confessio Fraternitatis (1615),
and The Chemical Wedding of Christian Rosenkreuz (1616)
from there groups recommend other literature be it optional or required, outside of their lesson plans, some include esoteric classics such as The Teachings of All Ages by Manly P Hall , some emphasize the works of Rudolph Steiner, Some groups have a list of requirements one must do each day, I think it was the AMORC that has/had the Rosicrucian Code of Life that were 3 codes a person should do. (example, first one when waking up contemplate on gratitude and then rise out of bed, face east drink a glass of water and Thank God for a new day and the chance at life he has given, then begin your day. (that's not word for word but the main gist of it) ther groups have some things similar to that they recommend you do.
Rudolph Steiner goes over self-initiation and many mindful exercises one must do, so many do choose self-initiation before officially joining a group. They then apply what the group has to offer while continuing their own practices they find beneficial. The one thing every group new or old that all do is they all take spiritual development seriously.